Archive for October, 2009

Glass

Wednesday, October 21st, 2009

Ceramic-Glass
Raw materials for Glass manufacturing:
Having seen the basic structure of glass manufacturing process, let us now discuss the raw materials and the amount of each raw material used in the process. As mentioned already there are 3 main raw materials used in the glass manufacturing process. Silica Sand, Soda Ash and Dolomite/Limestone are the main […]

Glass

Tuesday, October 20th, 2009

Ceramic – Glass
Inspection - After the ribbon of glass is formed in the bath and annealed, the glass is inspected well for defects. This process is totally automated. Advance techniques like Laser or Camera Systems are used to inspect the glass for possible defective areas. Higher production speed is possible with these technologies in […]

Glass

Monday, October 19th, 2009

Ceramic – Glass
Annealing – After the Glass ribbon is formed in the bath of molten tin, the glass enters the annealing stage which consists of two zones: the permanent and the temporary. The permanent zone is the zone which has a temperature range of 550C to 490C. It is in this zone that the […]

Glass

Sunday, October 18th, 2009

Ceramic – Glass
Forming in the Bath - The float bath generally contains greater than hundred ton of molten tin. This is generally electrically heated and then purged into a nitrogen-hydrogen mixture. Then the glass is poured on to this molten tin where the glass floats because of the difference between the glass and the […]

Glass

Saturday, October 17th, 2009

Ceramic – Glass
Melting – The furnace is considered as the heart of the float glass process. The parameters determining the furnace functionality are the product quality, production capacity, Furnace life and the Energy Consumed by the furnace. The above said factors are highly interrelated. A change in one of the parameter will have direct […]

Glass

Friday, October 16th, 2009

Ceramic – Glass
Batching: Tight Control on the process is required to monitor the composition, grain size and impurity content of each of the raw material used. This is necessary because slight variation can lead to major problems. To help prevent contamination of one material from another, it is important to have dedicated cart and […]

Glass

Thursday, October 15th, 2009

Ceramic – Glass
The various steps in the manufacturing of Glass in the float glass processing method are as follows.

Batching
Melting
Forming in the bath
Annealing
Inspection
Cutting and Packing

Batching: It is the process of unloading, storing, weighing, mixing, and conveying the raw material to the melting furnace. Though this process may not seem a […]

Glass

Wednesday, October 14th, 2009

Glass
The Flat Glass also referred to as Sheet Glass is best known for its flatness, thickness, durability and optical quality. These were initially formed by batch processing and later on during the period between the World War I and World War II it was converted into a continuous processing method. Methods like Colburn, Fourcault and […]

Glass

Tuesday, October 13th, 2009

Glass
Glasses are a type of ceramic materials. There is only a small difference in the process of forming ceramic wares and glass wares. The Glasses too start with the powder stage. The raw materials are crushed and powdered, but unlike ceramics were the mixture is sintered at high temperature to form a solid, here for […]

Ceramic Shaping

Monday, October 12th, 2009

After Shaping, the articles shaped are dried for a particular time schedule in closed chamber driers using the waste heat from the kilns. After drying, the wares are fired. Firing forms one of the most important steps in the manufacture of ceramics. Sanitary wares are generally fired in a 10-16 hour firing cycle in a […]